8WHO.Global Burden of Disease 2002:Deaths by age,sex and cause for the year 2002.Geneva Switzerland:World Health Organization,2003.
9Xiaofeng ZH,John A,Catherine D,et al.Prevalence and magnitude of classical risk factors for stroke in cohort of 5092 Chinese steel workers over 13.5 years of follow up.Stroke,2004,35:1052-1056.
10Thomas H,Catherine C,Kate T,et al.Cause of stroke recurrence is multi-factorial patterns,risk factors,and out comes of stroke recurrence in the south London stroke register.Stroke,2003,34:1457-1463.